Re: Making anaconda disable some storage-related systemd services in post-install config part of livecd install?

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On Fri, Jul 3, 2020 at 2:07 PM Hans de Goede <hdegoede@xxxxxxxxxx> wrote:

On 6/30/20 6:59 PM, Brian C. Lane wrote:
> On Tue, Jun 30, 2020 at 01:53:19PM +0200, Hans de Goede wrote:
>> So 2 questions:
>> 1. What do you think of my proposal to disable these
>> services (when not needed) in the livecd post-install
>> config phase? Would you be willing to accept a
>> merge-req for this?
>> 2. Its been a long time since I last touched the
>> anaconda code, my python is quite rusty and my
>> plate is way too full, so I was wondering if one
>> of you could implement this if we chose to go this
>> route?
> I think implementing this may be even easier. Anaconda runs post-script
> snippets from /usr/share/anaconda/post-scripts/*ks at the end of every
> install. The livecd could drop in a script to handle disabling these, I
> think.
> Current scripts are here:

Yes that would be an option, although getting the list of pkgs
which are deemed as being necessary for the configured storage
(and thus should not have their services disabled) might be
tricky to do from such a post-install script ?

Anyways, going by Vojtěch's reply, there are no objections to
removing device-mapper-multipath from the livecd. And it will be
quite easy to make the dmraid-activation service disable itself
if no dmraid sets are found (it already is a shell script).

So I believe it would be best to move forward with this as
I original proposed in the 2 change pages:

This requires almost no anaconda changes as mentioned in another
part of the thread, the hard-dep on device-mapper-multipath needs
to be dropped. But with some luck that is all that is required
on the anaconda side.

The anaconda's dependency on device-mapper-multipath is caused by fcoe-utils:

anaconda -> anaconda-install-env-deps -> fcoe-utils -> device-mapper-multipath

Is it expected that the support for FCoE devices will be dropped from Live OS?
If yes, it shouldn't be a problem to change the dependency on fcoe-utils to weak.




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